DAG act
A one-man band who think they’re the best thing since sliced bread. They play guitar and sing like they’re dying.
At the park, this guy did the DAG act. He dropped his guitar and started crying.
My brother did the DAG act at the family reunion. He forgot the lyrics and just kept shouting.
The guy did the DAG act on the bus. The driver asked him to stop or he’d get off.